Answer:
So M is the midpoint of RS lmbo
Step-by-step explanation:
What you have here are lengths of two equal segments, expressed as different algebraic expressions.
you just set those two expressions equal, and solve for x.  Then plug that x into EITHER of the two expressions, to get the equal lengths of RM & MS.
 
        
             
        
        
        
Answer:
consider x as the number of hours you work
so, the function that would satisfy this equation is 
10x